C3P0 Connection Pooling Example
C3P0 Connection Pooling Example exaplains about how to create and configure a Connection pool using C3P0 Datasource
Creating and establishing a database connections are relatively very expensive because of establishing a network connection, initializng database session, authorization in the back end database etc.
Due to this issues, it is good practice to use a connection pool in your applications in order to increase the performance and scalability. By using Connection Pool, you can re-use already existing connections and prepared statements, so that you can avoid the cost of establishing the connection.
C3P0 is an easy-to-use library for augmenting traditional (DriverManager-based) JDBC drivers with JNDI-bindable DataSources, including DataSources that implement Connection and Statement Pooling, as described by the jdbc3 spec and jdbc2 std extension.
Reference -> http://sourceforge.net/projects/c3p0/